HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Purohit, R. C. Articles by Estergreen, V. L. Search for Related Content PubMed PubMed Citation Articles by Purohit, R. C. Articles by Estergreen, V. L., Jr.

Corticosteroids in Jugular Plasma of Young Dairy Calves by a Double Isotopic Dilution Derivative Method^1,2,

Department of Animal Sciences, Washington State University, Pullman 99163

ABSTRACT

Jugular blood samples were taken from four dairy calves on the day of birth and every 5 days thereafter to 21 days of age. Plasma cortisol and corticosterone, determined by a double isotopic dilution derivative assay, were found on the day of birth in mean ratio of 13.0:1. From birth to Day 16, cortisol decreased while corticosterone increased to reduce the ratio to 1.9:1. The finding of both corticosteroids at birth in calves was in contrast to an earlier study in which only cortisol was found before calves were 10 days of age.

¹ Scientific Paper 3462, College of Agriculture Research Center, Washington State University, Pullman.

² This research was supported in part by Medical and Biological Research funds (Initiative 171) granted by the University Research Committee under Project 1750 and by Agriculture Research Funds, Project 1880.

⁵ Present address: School of Veterinary Medicine, Tuskegee Institute, Alabama 36088.